TY - JOUR
T1 - Local environment of W and Mo atoms in CaW1-xMoxO4 (x = 0.12) solid solution studied by X-ray structural analyzes
AU - Kitaura, Mamoru
AU - Kamada, Kei
AU - Happo, Naohisa
AU - Kimura, Koji
AU - Hayashi, Koichi
AU - Yamane, Hisanori
AU - Ina, Toshiaki
AU - Watanabe, Shinta
AU - Ishizaki, Manabu
AU - Ohnishi, Akimasa
N1 - Publisher Copyright:
© 2019 The Japan Society of Applied Physics.
PY - 2019
Y1 - 2019
N2 - The local environment of W and Mo atoms in CaW1-xMoxO4 (x = 0.12) solid solution (mixed crystal) scintillator crystal was analyzed by X-ray diffraction (XD), extended X-ray absorption fine structure (EXAFS), and X-ray fluorescence holography (XFH). The XD analysis revealed that W and Mo atoms occupy the same crystallographic site. The analyzes of XFH and EXAFS exhibited that the local environment of Mo atoms is different from that of W atoms. Atomic images of neighbor atoms around the Mo and W atoms were reconstructed using their positional fluctuations. The positional fluctuation of the W atoms was apparently larger than that of Mo atoms. This feature explained the absence of the peak due to next nearest neighbor O atoms around W atoms in the Fourier transfer magnitudes for the W-L 3 edge EXAFS spectrum. It is, therefore, most likely that the different positional fluctuations of the Mo and W atoms are responsible for different atomic images of neighbor atoms between them.
AB - The local environment of W and Mo atoms in CaW1-xMoxO4 (x = 0.12) solid solution (mixed crystal) scintillator crystal was analyzed by X-ray diffraction (XD), extended X-ray absorption fine structure (EXAFS), and X-ray fluorescence holography (XFH). The XD analysis revealed that W and Mo atoms occupy the same crystallographic site. The analyzes of XFH and EXAFS exhibited that the local environment of Mo atoms is different from that of W atoms. Atomic images of neighbor atoms around the Mo and W atoms were reconstructed using their positional fluctuations. The positional fluctuation of the W atoms was apparently larger than that of Mo atoms. This feature explained the absence of the peak due to next nearest neighbor O atoms around W atoms in the Fourier transfer magnitudes for the W-L 3 edge EXAFS spectrum. It is, therefore, most likely that the different positional fluctuations of the Mo and W atoms are responsible for different atomic images of neighbor atoms between them.
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U2 - 10.7567/1347-4065/ab560b
DO - 10.7567/1347-4065/ab560b
M3 - Article
AN - SCOPUS:85080142908
VL - 58
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 12
M1 - 120602
ER -